Drive-chain.



J. M. DODGE. DRIVE GHAIN. APPLIUATIO'N HLBD MAR. s, 1910.

Patented May 17, 1910.

2 SHEETS-31MB@ 1.

J. DDDG'E.

DRIVE GHPIN. APPLICATION FILED MAR. 9, 1910.

Patented May 17,1910,

-'nr'. "ponen,lv` 'or rI?'IIILanELPIILA, PEN HW COMPANY 11O F nIoAGO, ILLINOIS, A CORPORATION or ILLINOIS.

uziontfit may Y' lille it'1 knownv that I- JAMES M. DODGE, a 'citizenfo the- United- States, residing in 4Q lhi .lsadelphia, Pennsylvania, have invented 5 certalnl Improvementsl in Drive-Chains, of

of.plates of a'link to which it is coupled.

'lhe object of my invention is. to provide thew'orkingfaces of thel teethwith extended bearings.r l Y l a e the aecompanying drawings :@Figure 1,-e`is aper-spe'ctive view of one of the plates of the link illustrating my invention; Fig. 2,

is.a side view; Fig. 3, is a sectional view on the-line 3..-3, Fig. '2; 4, is a sectional --(.-:'vieweon the line 4.-4, Fig. 2; Fig. 5, is a planview vof a chain embodying Iny invention; Fig. 6, is a side view of the chain illustrated in Fig. -5 ;1Fig. 7, is an enlarged transverse sectional view on the line 7 7, Fig. 6

if Fig. '8, is. an .enlarged transverse sectional view on the line 8 8, Fig.V 6; Fig. 9, is aviewv illustratin one'method of arranging theI plates of almk; Figs. 10'and 11, are sectionalnviews illustrating my invention used -in-connection 4with-the t pe of chain .where eachlinkis made up-'o two plates spaced Vapart;: }3`i .-l12, isa perspective view of a modified?A ormjof late; Fig. 13, is a side view of( the plate iblank; F1gs.` 14 and 15,

i'are views illustrating modifications of 'the' 40 method o f=?forming;'the extended bearings; and Fig. 16is a plan View showing two plates;` arranged side by side.

llhech'ain isfcom osed of a series of links i-l-fAandA, connecte?! too'ether in the present instance by pivotpins and each link consistsrof ar-.ser-Ies'-lofplates a and each of these plates hastwo pivot pin openings a and two teeth b, as clearly shown in'Fig. 1. Pro- ?i-jeoting'laterallyfrom one side of the plate .50. ati'the workingface of fthe teethare extendedfbearings'b which',` when the plates are'f'assembled as illustrated in Fig. 5, aline with the bearings on the other plates, form- 'DRIVE-CHAIN.

' upper edge, as shown in Fig. 1.

appnfign med'narch 9,1910. AsrialNo. 548,179. l

NsYLvANIA, AssIGNon To -LINIii-nLT-ziz-f ing a continuous bearing fromfone side of the chain to the other, as illustrated in Figs. 7and8. l

` al' is a lateral projection, in the 'resent instance formed by pressing the p ate at thc tended bearing b' at the teeth and the proings a2 at the pivots, project a suicient distance so that when the plates are assembled the projections on one plate contact-with the projections on the adjoining plate; asshown 4' able dies, and the laterally projecting -portions a2 and b are formed by bending the metal from the blank at right angles to the longitudinal line of the plate..

The blank is made as shown. in Fig. 13, the projecting portions of the blank forming, when bent, lateral extended bearings b' at the teeth, while the pivot pin opening is only partially formed in the blank; the portion a? of the blankgremainin'g un'cut and this portion is forced from the blank by suitable dies, forming the extended bearings a2 at the pivot pin openings. The-link may, however, be made by drop forging orcasting,if necessary, and, in making chains having large platesections, it may be advisable to drop for e these plates rather .than to stamp them rom a sheet. It will be understood, with reference to Fig. 1, that the lateral extendedbearings at the teeth projecton. one side only of the plate. The object of this construction is to allow plates to'abc assembled in pairs, as shown in Figs. f7 and 8. Each pair of plates being so"ai ranged that-the plates are fitted back toback with the extension projecting on the free side and these plates can be connected together by welding or riveting, as illustrated and claimed in the application for patent The exl jection d, and preferably the extended beari;

tiled by me on December 7th, 1909, under I preferably project `inward so that when sev 1015` f tion'of the plates forming the link may have the extended bearings, ing fiat andavithout extended bearings, as

. illustrated 1nFig. 9, The bearing. however,

' chain of this vtype as ordinarily constructed.,

. in-whichthelinks are each made up of a pair of .plates', 1-5' v4this type of Chain I .preferably forni the -outside links with inwardly projecting extendedbearings', as shown in Fig. 10 and In' Fig. 12, I-haye illustrated my invenbearing formed byga-` plate b* secured to one broader surface than the bearing face of the at the pivotsdo not comein contact with Aeach other, the contact being solely between -central projection, although all the bearings maycome in contact, or only thoseat the `In some instances' in wide chains the bear- -vention can be applied to a `plain platein each side then the extended bearings inay be on eaen edge of ea'ch tooth.

have shown a. modification 'in `which the of hard metal;

j this instance I also show tlie projections cl abutting -so that there are three points of contact holding the plates a given distance j' -with entirely in some instances as in Fig. 12. This is'tr'iie AWhere a plate is of sufficient -thickness toresist any lateral strains, but

the intermediate the plates.

eralplates vare assembled, as in 'Fig-8, a continuons bearing, is formed extending from onside of the link to the other.. i

ing'need notbe continuous and only a poi'- the other plates bewill be of agreater-area than tlielinks of'a In F igs.. 10 and 1l, I have shown a chainl thefplates being spaced apart bysleeyes c` which surround the 'pivots c. In-

the inside links with outwardly projecting bearings, as shown in'Fig. l1.

tion' appliedtox a'. plate having` only 'one tooth, and it will 13e-understood that thevinwhich the extended" bearings at the pivot and the lateral projectionl d are dispensed with, 4and if the tooth has a working face on In Fig. 14,1 bhave 'shown' the extended side of the'link by'welding, and in Fig'. l5, I

bea-ring surface of the tooth is notched' to receive the bearing plate b5, which has a tooth, and this bearing plateinay be made In Fig. '16, I have Shown two plates of a link placed side by side with 'the extended bearings b" at each toothabuttiiig, and in apart 'and forniiiiga rigid support aga-inst any lateral'bending of the plates. In this particular instance .the extended bearings Itheextended bearings at the teeth and the teeth, without departing frointlie .essential features of the invention.'

The central projection d may be made in any-' inanne'r desired, -or may be dispensed where thin plates are used I preferably form projection so as to stifen In a pending application tiled Vby Harold 'S Pierce, June 9th, 1909, under Serial Numteeth of the links is set forth an ber 501,054, the extended bearin at Athe* broadly claimed, and, therefore, the present inven- -tion relates to the' forming of the extended1 -'bearing on one-side of the plate only, and forming the bearing by bending the Vmetal of the plate atan angle.- to the body thereof. "Iclaimz- 1 l. A chain link plate having perforations," teeth projecting at.4 one edge of, saidplate and havin-g laterally extendedbearings, and a lateral projection at the' other edge o f said plate. i

2. As a new article of manufacture, a `chain link element consisting of a plate having a' portion forming a .sprocket-engaging 8 0 tooth; said plate presenting'a plane surface on one face and havin@ on itsl otherV face a laterally extended bearing atthe tooth. f 3. As anew article of manufacture, a chain link element consisting of a plate hav- '85 ing portions forming sprocket enga-ging teeth;4 saidplate presenting a plane surface on one face and-having on its other face 'laterally extended bearings at the teeth.

4. As a new article of manufacture, a 9 0 chain link eleinent consistingof-a plate having a portion forminga sprocketsengaging tooth; said. tooth presenting a fiat -surface on one -sideand `havin on its other side a lateral projection forming an extendedbear -95 in 'continuation of its 4chainlink element consisting of a plate having twoangular projectin .teeth extending from the same 'side thereo one side of each of said teethhaving a .dat surface and the other side of each tooth having a lateral pro- Y j ection forming-an extended bearing adjacent to and in continuation' of its working-105 face. 6.- As a new article of manufacture, a chain link elementl consisting, of a pair of plates each having a4 portion forming a sprocket-engaging tooth, each of said plates y presenting a plane surface on one face and having said surfaces immediately adjacent to each other, the plates being Yprovided with lateraliyextended bearings at the teeth, projecting in opposite directions.

7. The combination in acliain, o f-a series of links each consisting ofa plurality of pairs of lates having teeth and laterally extended earings at-the workingfaces of said teeth, the' plates of each pair havin 120 faces immediately "adjacent 'fo each other an the bearings of each 4pairpr'ojecting lfrom the two outer faces thereof and lying 1n sub-y stantially the saine plane. -'1

Y8. A chain pair of lates, each hayi-nga tooth andeach' provided with .a bearin projecting adjacentthe working face of. t

e tooth at-one side lement consisting, ofr'a 1:25-

adjacent to each other\ With said 4projecting in opposite directions. 9. A chain'formed of a series of links each thereof, said plates being held immediately bearings consisting of a. plurality of pairs of plates, each plate having a tooth provided With a `bearing projecting at one side thereof,l with .means for connecting the links and holding the plates 4vof each pair immediately adja- .oent to each other with their bearings pro- 1jecting'in opposite directions.

l0. A link plate Smade of sheet metal and having a tooth and an extended bearing projecting laterally from one side ofthe tooth; the ibers ofthemetal in the bearing lying in a plane substantially at right angles to 5.25 disposed lateral'projectlon on the same side ythe plane 'of the iibe'rs of the metal in the 11..;A; link plate havingtwo perforations and two angular teeth, said plate being provided withjlaterally extended bearings projecting on lone side thereof at the perfora- Ations'and also'having anextended bearing projectinglaterally .from one side at the Working-.face ofea'ch tooth, With a centrally bearings.' Y

12'.. The combination in a drive chain of a series of'lin'ks each composed of a 'number o f the .plate -as that having the extended vbf toothedfplat'es arranged' in pairs; the

of plates of an adjoining coupling the variousv links.

plates of e'achipair havinga plane surface, 'on one side and laterally extended bearing projections at the teeth on'the other side;

said plates of each pair being arranged with their plane surfaces in juxtaposition and the pairs 'of plates of one link alternating With Ierally extended bearings 'at said openings projecting on the sameside of the plate as the tooth .lz-)earing'project1ons; said plates of each pair being arranged with their plane surfaces in juxtaposition and the pairsof plates of one link 'alternating with the pairs link; with pivots In testimony Whereof, I have signed my name to this specification, in the presence of two subscribing Witnesses.

JAMES M. DODGE.

Witnesses:

WM. E. SHUPE, WVM. A. BARR. 

